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WorksheetsPTT361 Quiz 3: Lecture 4.1
Total questions: 10
Worksheet time: 4mins
What are the two concepts that are discussed in Lecture 4.1?
Partial similarity
Reduction of pi-set
Intermediate quantities
Scale invariance
Select the correct description to an "appropriate" model in scale up:
To conduct model measurements in more than one model device, the numerical values of the pi-numbers must be the same with the selection of the numerical values of the process parameters of the model material system.
To conduct model measurements in only one model device, the numerical values of the pi-numbers must be the same with the selection of the numerical values of the process parameters of the model material system.
To conduct model measurements in only one model device, the numerical values of the pi-numbers must be adjusted by appropriate selection of the numerical values of the process parameters of the model material system.
To conduct model measurements in more than one model device, the numerical values of the pi-numbers must be adjusted by appropriate selection of the numerical values of the process parameters of the model material system.
In another words, in scale up, we should: use the (a) model only and choose the suitable numerical values to be plucked into the model, especially the process and material parameters.
Which of the following quantities or parameters that could be changed when investigating the appropriate model in Step 6?
Process
Target
Material
Geometric
Which of the following quantities or parameters that should be changed when investigating the appropriate model in Step 6 if the model material system is unavailable?
Target
Process
Material
Geometric
Sometimes we just can't conduct model measurement in only one model device, but why?
Which of the following parameters are unmeasurable according to the Example 3.3 in Lecture 4.1?
Densities of the foam
Dynamic viscosity of the foam
Elasticity of the foam
Concentration of the surfactant
Define: Partial Similarity
To divide the process of study into parts and investigate them separately
To deliberately abandon certain similar criteria and their effect on the entire process
To divide the process of study into parts and investigate them altogether
To deliberately abandon certain different criteria and their effect on the entire process
When we don't have an appropriate model appliance, why should be we opt of the scale up using partial similarity?
It's cheaper to do so
It's more expensivero do so
It's harder to do so
It's more challenging to do so
Which of the following famous dimensionless numbers are related to the Example 3.4 in Lecture 4.1?
Reynolds number
Froude number
Arrhenius number
Arthur number
